Inspired by trying to remember where http://www.yournotme.com/ is (there are 16 people called Nicholas Whyte in the UK, apparently), I’m using this entry to bookmark the following:

UCL’s surname profiler, which shows Whytes of Great Britain concentrated in eastern Scotland (Angus and Fife in 1881; shifting north by 1998), and my wife’s maiden name concentrated in North Yorkshire in 1881 and mysteriously absent in 1998.

US Census Bureau – gives you total numbers and ranking of your name in the US. (Whyte is the 4460th most common name in the US, with a frequency of 0.003%, ie about 1 in 30,000. Nicholas is the 64th most common first name, with a frequency of 0.275%, 1 in 36.)

Nice map of US surname distribution. (Whytes very much absent from the Deep South; concentrated in New York and Washington. My wife’s maiden name appears only in North Carolina.)

There are presumably equivalents for other countries.